High-Altitude Lightning Observation Site

A high-altitude lightning observation site (HALOS) in Colorado available
for independent research activities.

All parties are welcome, though available space is limited. Fees are
modest and are negotiated on per-use or a per-project basis. Email
NLSI for further information.

Details about HALOS are as follows:

1.0 Location and Facilities

1.1 HALOS is located at the 11,500 level of the Colorado Front
Range Rocky Mountains, some 35 miles W. of Boulder and 75 miles
W. of Denver CO.

1.2 The 300 acre site is rolling to flat, with fragmented and
broken granite soils. It is accessible only by 4WD vehicle (provided).
Walking is required for the final two miles (due to vegetation sensitivity).

1.3 A wooden frame, 1500-ft. sq. Quonset-design building is on
site. Power (220 -110 V) and telephone lines (fiber T-1) are on
site. All test equipment/materials should be furnished by the researchers.

1.4 Modern support facilities are located about 4 miles below
the site, at the 9500 ft. elevation. A cafeteria, overnight cabin-type
accommodations, and a conference room are available.

2.1 The Isokeraunic Index is estimated reliably at 105-122/year.
By comparison, Denver's Iso is about 65-70.

2.2 A Global Atmospherics, Inc. flash density map will be available
shortly.

3.0 Climate Conditions, Personal Safety & Liability

3.1 Users of HALOS must be in good physical condition.

3.2 All researchers using the facilities must attend a Local Conditions
Briefing (three hours). Weather conditions change fast at this altitude.
Regardless of time of year, proper personal equipment and understanding
of emergency procedures are essential.

3.3 Users of HALOS agree to hold NLSI and other agencies harmless
from all consequences incurred and to assume full responsibility
for same. Sites must be restored to original condition at project
end.

4.0 Examples of Research

4.1 Research projects largely are unrestricted, but project outlines
are subject to review and approval by NLSI.

4.2 Examples of research might include issues related to grounding,
bonding, shielding, corrosion, transient limiters, and air terminals.

4.3 Rocket-triggered and laser-triggered research are allowed.
Static-filled clouds are in abundance at this site, usually less
than 1000 feet overhead.